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By "Leuschner, Armin Otto, (Born - 1868)"
Celestial mechanics. A survey of the status of the determinationof the general perturbations of the minor planets, by A. O. Leuschner.
By: National Research Council (U.S.). - Leuschner, Armin Otto,
Publication info: Washington, D. C. :Published by the National research council of the National academy of sciences,1922.
Contributed by: University of California Libraries (archive.org)